Finding the Nodes of an Edge in LEMON graph library

Question

Suppose that I have an Edge. How can I easily find which two nodes it connects? The documentation of LEMON is so sparse, I could not find info on this.

Answer 1

You can use source and target to find the nodes an edge connects, it works like this

ListDigraph graph;
ListDigraph::Arc edge;
ListDigraph::Node a1,a2;
a1 = graph.source(edge);
a2 = graph.target(edge);